Combination handsaw and measuring tool



ug. 9, 11949. R. R. WARRINGTON COMBINATION HANDSAW AND MEASURING TOOLFiled Aug. 8, 1947 2 Sheets-Sheet l l I l I l II l l a v ,ff u I ,l i3 4K INVENTpR.

ug 9 l949- R. R. WARRINGTON COMBINATION HANDSAW AND MEASURING TOOL 2Sheets-Sheet 2 Filed Aug. 8, 1947 Patented Aug. 9, 1949 eQQMBIATONeMEASUzRING v LVRicherf{RvifeuringtoniVictoria; Ontario,

'flV ,'1'his,.inizention relates, tmhand tools `andilxlore particularlyY to a combination hand SaW and measuring tool.

Arnain object ofthe.tinrentienis.ttqproizilee novel `and ,improvedcombination handgsawnd `ineasuring .tool mush. may.4 beemplpyedvimmaking4 linear ,or angular measurements, orgmey' be employedas a ,square r asa leyel,.'said`t001 being very simple, ,inconstruction, easmto use and Yaccurate in, performance.

A further object of i'llflenventionLis ,tqproyide an., limprovedlcerieenterfs Jhand 4too1.norrnelly-em ployed .as Va. saw, which. is`also. useful as .a universal measuringtool. Sadtool Droyidilplg. meansformarking angles, `measuring,unknown pitich angles, measuring -lengths,and. the, likeand ,involving only a few..simplemarts,.Whichere.readilyassembled and inexpensiye to. manufacturegthe assembly beine :easy to7.rrieripulete.;and heving wide utility inwoodworkinggpperatiunsiandcarpeniry.

Further objects end.u ,advantegesoigthe .invention will become iapparent from the' ,fQllWin description and, claim, and liflemn4 theaccompanying drawings, wherein:

` Figure 1 is van elevational viewpf o 1,1e s1cle1` of the handle `endportion of a combination" AI land saw vend measuringk tool constructed.in .aecordance with 'the present invention.

vFigurez is an elevational'view ofgjthef opposite side of the tool.structure shown in, Figuregnwith the handle angled Withjrespect to'gtheblade, es when the tool VisermfiloyedV to vmeasurejan vunknown roofpitch angle.

Figure 3 Vis anenlarged crossN-'seetionalfdetail View vtaken through'the blade loclnngjportiQnV of the tool of Figure 1.

lFigure 4 is a crossesectional'detail viewtaken on line 4-4 of Figure 3.

Figure 5 is an. enlargedrossesectional detail View' taken vthrough thepivotal connection of x:Figure aisevieweimiiameenieure amen-she slide inretractedposition.

Referring to thevdrawings, llydesignates a. saw blade having the sawteeth l2 formed at its lower edge. Thetop edge offbladeglLis straightras,Withf v"11fst..inehj, sealeill running.'from. the lierward timer theb1ade.to,.;the rearward.. end "115 thereof. 1;;Said,rearwardendgis,ercuetely euriied, asshownatj I6. i

Pii/olseily secured tabl-ede?! Latnl'l .is-e. ,handle I8. formed. withaslot; l 9 1in,.W.h .Ch.2"the rear. .end of "the" blade is secured,seiilgslot` allowingjthe hladeto beangled. with respect.. to .thehandle." I'S, estshowngin'dotted" view. ..1n"Fieure.`1.. ar-oundthepivotahconneetion' I l. "When "the ibladel irrite normal .positionWithrespect to ,theihandlegas shown infull "line View.v in EieuretL.thefbottnm V of' ithe.;s1 t I9 L abuis; the .upper portieri, of 'therear eurilededgeof theblede, 'asjishown. -at.;2 iniigure 1, wherebyforce, .meygbeireusmitted `from:,thezgharidle,direetlyxto1,.,thegbladejas requin-:d ier ieicent. .use of 1t,he.to01.as eisen The pivotel:1conneetienY `IT,-comprises. a 'heeded internally:threaded J'sle'eve "member '2l which passes through theehene .I 8 ,andthrough.en evening 1in' `the;sawlolelde; I l asshown .inEieure 5;"rhreadedinto: thesleevememben. l, isa, bell Mihai/.ineaheadflange-iormed with ahexa'eqnfal -Dertion which may-beferieeeed;by;a4suitable wrench' to regulate lthe [pressure ef the 1 heed eneeof'eb'oltZ2 {inthe-,adjacent surfeeeefhandle I f'wherepy the clamping 'pressure'of said 'jbolt at "the 'pivotal connection 11; mayfbeset toa desireddegree.

T'Phe forward edgesV of fthe Vhandle J8v Aare straight, as "shown at 24,`and in the normal` posiytion offthe blade 1B areV at rghtanglestothetop `blade edge `;'!3. Adjacent;'thegseale--l'ithel top Derti'oniofeeehjside ofi'the'lladeiis markedwith efsecondiirrehJ scale'25=beginni11g at A,the handle edgei24 andl'extending.towardjthe'forwardtip'iof the blade. As shown j ineFigure' '1;A the' top edgeportion; lof the'hlajde extends upwardly a substantialdistance'beyond'lthe top edge'surfaees'zjof thehandle. "Il'lsenabl'es'he top edges portion of the -bladeto be ,laidioverj the edge orja 'bpaid when making linear measurements thereon,'-When the toolisset-1in Iits= normal position. '."Sincej the handleiorward edges-24are 'at right; angles to theb tou blade edge` l 3 infthispositiontheftopfl maybe'also employed as 'a square.

Bla'le" l l' vis .scribed or' grooved l v7with, angledefiriing' 'lines'21 `extending radially"jfrom4 pivotal connetipni I1 and 'isuitahly`calibrated inl terms offdegrees "with 'respectf'torindex pointers28g"at the" lower *forward corners of thef'handle'l. Carried ong-said'handle' 4is aiflrst'`v bubblelevel' and a yseg-,ond bubble leyelfq:positionedatright giggles -toji-level29-1 "..In measuring an unknownangle of inclination, such as a roof pitch angle, the straight edge I3of the blade II is laid on the inclined surface and the handle I8 isswung around the pivotal connection I1 until the bubble of lever 29 iscentered. The pointers 28 will then indicate the pitch angle at thecalibrated angle lines 21. A

Threaded intothe, handle I8 adjacent the lower forward corner thereof isa hollow stud 3I in Which is slidably positioned a pointed ratchetmember 32. Threaded on stud 3l is a cap 33. A coil spring 34 ispositioned in the hollow stud, bearing between cap 33 and ratchet member32. The pointed ratchet member 32 engages inthe scribed lines 21 andaids in positioning the handle at a desired angular setting with respectto straight edge I3 of the saw blade by producing an audible click eachtime the ratchet member moves past a scribed line 21.

The bubble level 3D is employed as a horizontal level testing devicewhen the blade is set in its normal position with respect to handle I8and the straight edge I3 is laid on the surface to be tested. The bubblelevel 29 is employed as a plumb testing device when the blade is innormal position by placing the straight edge I3 against the wall orother surface to be tested for perpendicularity to the horizontal.

Adjacent an upper forward corner thereof handle I8 is formed with a bore35 and at the center of bore with a smaller bore 36 which extends to theslot I9 and is continued beyond said slot by a bore portion 31. Blade II is formed with an opening 38 which registers with the bore portions 36and 31 when the blade is in its normal position with respect to handleI8, as shown in Figures 1 and 3. Slidable in the aligned bore portions36 and 31 and in blade opening 38 is a locking pin 39 having a circularhead 40 which ts slidably in the larger bore 35. A relatively weakcoiled springv4I is positioned in bore 35 beneath the circular head 4 0andbiases the pin 39 towards release position with respect to theopening38 in blade I I. The circular head 40 is formed with an inclinedtopsurface42 which is engaged by a depending bar 43 carried by a slidemember 44, shown in Figure 7. Slide member 44 is longitudinally slidablein a recess 45, formed in handle I8 adjacent bore 35, said recess havinga subadjacent portion 46 adapted to receive the lug 43 when the slidemember is moved rearwardly in the recess. A pair of coiled springs 41,41 bear between lug 43 and the rear Wall of recess portion 46, therebybiasing said lug forwardly into overlying relation to the head of pin 39member 44 carries a serrated button element48 which projects upwardlythrough a slotted f rame plate 49 secured to'the handle I8 in overlyingrelation to slide member 44. When button element 48 is moved rearwardlyagainstthe biasing pressure of springs 41, 41, lug 43 is moved out ofengagement with the inclined cam surface 42 of head 40, allowing thespring 4I to move the pin siide 39 to blade-releasing position. v Whenthe blade blade is again rotated to its normal position with respect tothe handle, at which time the pin 39 4 again enters the blade opening 38and locks the blade in said normal position.

The forward lower corner of lug 43 is smoothly rounded, as shown at 49to facilitate its camming engagement with inclined head surface 42.

It is thus seen that the blade I I may be readily unlocked by movingbutton 48 rearwardly and .willremain unlocked, vexcept lfor thefrictional locking action provided by ratchet element 32. as long as theblade is in angled position with respect to handle I8. When the blade isrestored to the normal position shown in full line view in vFigure 1, itis automatically locked by the movement .of pin 39 through the bladeopening 38 produced by the biasing action of springs 41, 41 on lug 43and the camming action of said lug on the inclined pin head surface 42.The coiled spring 4I. is relatively weak as compared with springs 41, 41so that it does not prevent the return of pin 39 to locking positionunder the force transmitted to said pin from springs 41, 41 through thelu'g 43 and cam head 48. However, spring 4I is sun'iciently strong toraise the pin 39 to unlocking position when the button element 48 ismanually moved rearwardly, as above described.

It will'be noted that the pivot sleeve member 2| has a relatively largediameter. This provides a substantial pivot bearing surface, therebyminimizing wear and maintaining the accuracy of the pivotal connectionbetween the handle I8 and blade II.

While a specific embodiment of a combination hand Ysaw and measuringtool has been disclosed in the foregoing description, it will beunderstood that various modifications within the spirit of theinventionmay occur to those skilled in the art. Therefore, it is intended that nolimitations be placed on the invention except as defined by the scope ofthe appended claim.

What is claimed is:

In a combination hand saw and measuring tool wherein thehandle ispivotally connected to the blade, means for releasably locking thehandle to the blade in their normal position and against .pivotalmovement, said means comprising a locking pin movably carried'by saidhandle, the blade having an opening to receive said pin when the handleand blade are in said normal position, a rst springmeans biasing the pinaway from said opening, a cam carried by said pin, a slide memberslidably carried'by said handleand engageable with said cam, and asecond spring means biasing said slide member into camming engagementwith said pin, said second spring lmeans being stronger than said firstspring means, the slide member cooperating with the cam under the forceof said second spring means to move the'locking pin into the bladeopening when said opening comes into registry with said pin.

' RICHARD R. WAlRINCrTONQv REFERENCES CITED '.,The following referencesare of record in the file of this patent:

UNITED STATES PATENTS FOREIGN PATENTS y Country. Date Switzerland Nov.14, 1935 Number umberv

